- 17 Apr, 2008 20 commits
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Heiko Carstens authored
If vertical cpu polarization is active then the hypervisor will dispatch certain cpus for a longer time than other cpus for maximum performance. For example if a guest would have three virtual cpus, each of them with a share of 33 percent, then in case of vertical cpu polarization all of the processing time would be combined to a single cpu which would run all the time, while the other two cpus would get nearly no cpu time. There are three different types of vertical cpus: high, medium and low. Low cpus hardly get any real cpu time, while high cpus get a full real cpu. Medium cpus get something in between. In order to switch between the two possible modes (default is horizontal) a 0 for horizontal polarization or a 1 for vertical polarization must be written to the dispatching sysfs attribute: /sys/devices/system/cpu/dispatching The polarization of each single cpu can be figured out by the polarization sysfs attribute of each cpu: /sys/devices/system/cpu/cpuX/polarization horizontal, vertical:high, vertical:medium, vertical:low or unknown. When switching polarization the polarization attribute may contain the value unknown until the configuration change is done and the kernel has figured out the new polarization of each cpu. Note that running a system with different types of vertical cpus may result in significant performance regressions. If possible only one type of vertical cpus should be used. All other cpus should be offlined. Signed-off-by:
Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by:
Heiko Carstens <heiko.carstens@de.ibm.com>
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Heiko Carstens authored
Add s390 backend so we can give the scheduler some hints about the cpu topology. Signed-off-by:
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Heiko Carstens authored
Make stfle visible so other code can call this. Signed-off-by:
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Martin Schwidefsky authored
Add permanent and temporary model capacity and the corresponding capacity value fields for the three capacity identifiers to the output of /proc/sysinfo. Signed-off-by:
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Christian Borntraeger authored
drivers/s390/sysinfo.c uses the store system information intruction to query the system about information of the machine, the LPAR and additional hypervisors. KVM has to implement the host part for this instruction. To avoid code duplication, this patch splits the common definitions from sysinfo.c into a separate header file include/asm-s390/sysinfo.h for KVM use. Signed-off-by:
Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by:
Carsten Otte <cotte@de.ibm.com> Signed-off-by:
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Stefan Haberland authored
Now the system reports system information messages (SIM) to the user. The System Reference Code (SRC) which is reported to the user gives the abbility to lookup the reason of the SIM online in the documentation of the storage server. Signed-off-by:
Stefan Haberland <stefan.haberland@de.ibm.com> Signed-off-by:
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Heiko Carstens authored
sys_sigreturn and sys_rt_sigreturn don't take any arguments. So luckily this resulted only in unneeded instead of incorrect code. But still this clearly shows why one should not put extern declarations in C files (will be fixed with a larger sparse patch). Signed-off-by:
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Frank Munzert authored
If user space opens a unit record device node then vmur is leaving the kernel with lock open_mutex still held to prevent other processes from opening the device simultaneously. This causes lockdep to complain about a lock held when returning to user space. Now the mutex is replaced by a wait queue to serialize device open. Signed-off-by:
Frank Munzert <munzert@de.ibm.com> Signed-off-by:
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Michael Holzheu authored
When a tape device is set online, offline and online again, the following error message is printed on the console: "sysfs: duplicate filename 'non-rewinding' can not be created". The reason is that when setting a device online, the tape driver creates a sysfs symlink from the tape device to the tape class device. Unfortunately the symlink is not removed correctly, when the device is set offline. Instead of passing the tape device object to sysfs_remove_link, the class device object is used. This patch fixes this problem and uses the correct tape device object now. Signed-off-by:
Michael Holzheu <holzheu@de.ibm.com> Signed-off-by:
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Stefan Haberland authored
allocating dasd_fba_private without GFP_DMA results in IO error during read device characteristics of a FBA disk Signed-off-by:
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Ursula Braun authored
Problem: Usually every FCP device has its own indicator field the adapter uses to signal outstanding work. Once a certain limit of devices is reached, a common indicator field is used. In certain scenarios qdio resets this common indicator field, but handles only part of the FCP-devices sharing the common indicator field. Thus inbound traffic on the non-processed shared FCP-devices is not recognized immediately. Solution: Make sure common indicator field is reset only, if all FCP-devices sharing the indicator are processed. Signed-off-by:
Ursula Braun <braunu@de.ibm.com> Signed-off-by:
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Heiko Carstens authored
Reintroduces in_interrupt() check in sclp_tty code. Add may_schedule parameter to vt220 write function, so we can let the write function know if it may schedule or not. So we disallow scheduling for all console calls and may allow them for tty calls. Signed-off-by:
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Michael Ernst authored
It is now possible to trigger cm_enable processing several times in parallel without causing a kernel panic. Signed-off-by:
Michael Ernst <mernst@de.ibm.com> Signed-off-by:
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Cornelia Huck authored
Currently, we don't do much on no path or no device situations during normal user I/O, since we rely on reports regarding those events by the machine. If we trigger a path verification to bring our device state up-to-date, we (a) may recover from path failures earlier and (b) better handle situations where the hardware/hypervisor doesn't give us enough notifications. Signed-off-by:
Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by:
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Cornelia Huck authored
Make sure we wait for previous evaluations triggered by path state changes to have settled before we manipulate path states again. Signed-off-by:
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Martin Schwidefsky authored
Fix the following link error with allnoconfig: vmem.c:(.text+0x175c): undefined reference to `smp_ptlb_all' vmem.c:(.text+0x1b24): undefined reference to `smp_ptlb_all' fork.c:(.text+0x4190): undefined reference to `smp_ptlb_all' : undefined reference to `smp_ptlb_all' : undefined reference to `smp_ptlb_all' mm/built-in.o:: more undefined references to `smp_ptlb_all' follow make[1]: *** [.tmp_vmlinux1] Error 1 make: *** [sub-make] Error 2 Signed-off-by:
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Heiko Carstens authored
This is just a port of 83bd0102 "x86: protect against sigaltstack wraparound". Signed-off-by:
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Josef 'Jeff' Sipek authored
I compiled the kernel without deadline, and the dasd code exits the old scheduler (CFQ), fails to load the new one (deadline), and then things just hang - with one of these (sorry about the weird chars - I copy & pasted it from a 3270 console): dasd(eckd): 0.0.0151: 3390/0A(CU:3990/01) Cyl:3338 Head:15 Sec:224 ------------ cut here ------------ Badness at kernel/mutex.c:134 Modules linked in: dasd_eckd_mod dasd_mod CPU: 0 Not tainted 2.6.25-rc3 #9 Process exe (pid: 538, task: 000000000d172000, ksp: 000000000d21ef88) Krnl PSW : 0404000180000000 000000000022fb5c (mutex_lock_nested+0x2a4/0x2cc) R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:0 CC:0 PM:0 EA:3 Krnl GPRS: 0000000000024218 000000000076fc78 0000000000000000 000000000000000f 000000000022f92e 0000000000449898 000000000f921c00 000003e000162590 00000000001539c4 000000000d172000 070000007fffffff 000000000d21f400 000000000f8f2560 00000000002413f8 000000000022fb44 000000000d21f400 Krnl Code: 000000000022fb50: bf2f1000 icm %r2,15,0(%r1) 000000000022fb54: a774fef6 brc 7,22f940 000000000022fb58: a7f40001 brc 15,22fb5a >000000000022fb5c: a7f4fef2 brc 15,22f940 000000000022fb60: c0e5fffa112a brasl %r14,171db4 000000000022fb66: 1222 ltr %r2,%r2 000000000022fb68: a784fedb brc 8,22f91e 000000000022fb6c: c010002a0086 larl %r1,76fc78 Call Trace: (<000000000022f92e> mutex_lock_nested+0x76/0x2cc) <00000000001539c4> elevator_exit+0x38/0x80 <0000000000156ffe> blk_cleanup_queue+0x62/0x7c <000003e0001d5414> dasd_change_state+0xe0/0x8ec <000003e0001d5cae> dasd_set_target_state+0x8e/0x9c <000003e0001d5f74> dasd_generic_set_online+0x160/0x284 <000003e00011e83a> dasd_eckd_set_online+0x2e/0x40 <0000000000199bf4> ccw_device_set_online+0x170/0x2c0 <0000000000199d9e> online_store_recog_and_online+0x5a/0x14c <000000000019a08a> online_store+0xbe/0x2ec <000000000018456c> dev_attr_store+0x38/0x58 <000000000010efbc> sysfs_write_file+0x130/0x190 <00000000000af582> vfs_write+0xb2/0x160 <00000000000afc7c> sys_write+0x54/0x9c <0000000000025e16> sys32_write+0x2e/0x50 <0000000000024218> sysc_noemu+0x10/0x16 <0000000077e82bd2> 0x77e82bd2 Set elevator pointer to NULL in order to avoid double elevator_exit calls when elevator_init call for deadline iosched fails. Also make sure the dasd device driver depends on IOSCHED_DEADLINE so the default IO scheduler of the dasd driver is present. Signed-off-by:Josef 'Jeff' Sipek <jeffpc@josefsipek.net> Signed-off-by:
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Linus Torvalds authored
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git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: it821x: do not describe noraid parameter with its value Pb1200/DBAu1200: fix bad IDE resource size Au1200: IDE driver build fix Au1200: kill IDE driver function prototypes avr32 mustn't select HAVE_IDE
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- 16 Apr, 2008 20 commits
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Paul Bolle authored
Describe noraid parameter with its name (and not its value). Signed-off-by:
Paul Bolle <pebolle@tiscali.nl> Signed-off-by:
Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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Sergei Shtylyov authored
The header files for the Pb1200/DBAu1200 boards have wrong definition for the IDE interface's decoded range length -- it should be 512 bytes according to what the IDE driver does. In addition, the IDE platform device claims 1 byte too many for its memory resource -- fix the platform code and the IDE driver in accordance. Signed-off-by:
Sergei Shtylyov <sshtylyov@ru.mvista.com> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by:
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Sergei Shtylyov authored
The driver fails to compile with CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA enabled: drivers/ide/mips/au1xxx-ide.c: In function `auide_build_dmatable': drivers/ide/mips/au1xxx-ide.c:256: error: implicit declaration of function `sg_virt' drivers/ide/mips/au1xxx-ide.c:275: error: implicit declaration of function `sg_next' drivers/ide/mips/au1xxx-ide.c:275: warning: assignment makes pointer from integer without a cast Fix this by including <linux/scatterlist.h>. While at it, remove the #include's without which the driver happily builds. Signed-off-by:
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Sergei Shtylyov authored
Fix these warnings emitted when compiling drivers/ide/mips/au1xxx-ide.c: include/asm/mach-au1x00/au1xxx_ide.h:137: warning: 'auide_tune_drive' declared `static' but never defined include/asm/mach-au1x00/au1xxx_ide.h:138: warning: 'auide_tune_chipset' declared `static' but never defined by wiping out the whole "function prototyping" section from the header file <asm-mips/mach-au1x00/au1xxx_ide.h> as it mostly declared functions that are already dead in the IDE driver; move the only useful prototype into the driver. Signed-off-by:
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Adrian Bunk authored
There's a libata based PATA driver for avr32, but no support for drivers/ide/ on avr32. This patch fixes the following compile error: <-- snip --> ... CC [M] drivers/ide/ide-cd.o In file included from /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/ide/ide-cd.c:37: /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/ide.h:209:21: error: asm/ide.h: No such file or directory make[3]: *** [drivers/ide/ide-cd.o] Error 1 <-- snip --> Signed-off-by:
Adrian Bunk <bunk@kernel.org> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Acked-by:
Sam Ravnborg <sam@ravnborg.org> Signed-off-by:
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git://git.kernel.dk/linux-2.6-blockLinus Torvalds authored
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: block: update git url for blktrace io context: increment task attachment count in ioc_task_link()
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: USB: remove broken usb-serial num_endpoints check USB: option: Add new vendor ID and device ID for AMOI HSDPA modem USB: support more Huawei data card product IDs USB: option.c: add more device IDs USB: Obscure Maxon BP3-USB Device Support 16d8:6280 for option driver
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: [TCP]: Add return value indication to tcp_prune_ofo_queue(). PS3: gelic: fix the oops on the broken IE returned from the hypervisor b43legacy: fix DMA mapping leakage mac80211: remove message on receiving unexpected unencrypted frames Update rt2x00 MAINTAINERS entry Add rfkill to MAINTAINERS file rfkill: Fix device type check when toggling states b43legacy: Fix usage of struct device used for DMAing ssb: Fix usage of struct device used for DMAing MAINTAINERS: move to generic repository for iwlwifi b43legacy: fix initvals loading on bcm4303 rtl8187: Add missing priv->vif assignments netconsole: only set CON_PRINTBUFFER if the user specifies a netconsole [CAN]: Update documentation of struct sockaddr_can MAINTAINERS: isdn4linux@listserv.isdn4linux.de is subscribers-only [TCP]: Fix never pruned tcp out-of-order queue. [NET_SCHED] sch_api: fix qdisc_tree_decrease_qlen() loop
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Paul Bolle authored
Describe debug parameters with their names (and not their values). Signed-off-by:
David Howells <dhowells@redhat.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Greg Kroah-Hartman authored
The num_interrupt_in, num_bulk_in, and other checks in the usb-serial code are just wrong, there are too many different devices out there with different numbers of endpoints. We need to just be sticking with the device ids instead of trying to catch this kind of thing. It broke too many different devices. This fixes a large number of usb-serial devices to get them working properly again. Cc: Oliver Neukum <oliver@neukum.org> Cc: stable <stable@kernel.org> Signed-off-by:Greg Kroah-Hartman <gregkh@suse.de>
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tang kai authored
This patch add new vendor ID and device ID for AMOI HSDPA modem. From: tang kai <tangk73@hotmail.com> Signed-off-by: -
fangxiaozhi authored
- declare the unusal device for Huawei data card devices in unusual_devs.h - disable the product ID matching for Huawei data card devices in usb_match_device function of driver.c - declare the product IDs in option.c. Signed-off-by:
fangxiaozhi <huananhu@huawei.com> Signed-off-by:
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Matthias Urlichs authored
Add devices by AMOI and NovatelWireless. Signed-Off-By:
Matthias Urlichs <matthias@urlichs.de> Signed-off-by:
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James Cameron authored
The modem was detected, the ttyUSB{0,1,2} appeared, a call could be made, and the expected data rate was achieved. Tested for an hour or two, total of 100Mb. I shall do more testing. Signed-off-by:James Cameron <quozl@laptop.org> Signed-off-by:
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Vitaliy Gusev authored
Returns non-zero if tp->out_of_order_queue was seen non-empty. This allows tcp_try_rmem_schedule() to return early. Signed-off-by:
Vitaliy Gusev <vgusev@openvz.org> Signed-off-by:
David S. Miller <davem@davemloft.net>
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yakui.zhao@intel.com authored
http://bugzilla.kernel.org/show_bug.cgi?id=10124 this change: commit 08f1c192 Author: Muli Ben-Yehuda <muli@il.ibm.com> Date: Sun Jul 22 00:23:39 2007 +0300 x86-64: introduce struct pci_sysdata to facilitate sharing of ->sysdata This patch introduces struct pci_sysdata to x86 and x86-64, and converts the existing two users (NUMA, Calgary) to use it. This lays the groundwork for having other users of sysdata, such as the PCI domains work. The Calgary bits are tested, the NUMA bits just look ok. replaces pcibios_scan_root by pci_scan_bus_parented... but in pcibios_scan_root we have a check about scanned busses. Cc: <yakui.zhao@intel.com> Cc: Stian Jordet <stian@jordet.net> Cc: Len Brown <lenb@kernel.org> Cc: Greg KH <greg@kroah.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: "Yinghai Lu" <yhlu.kernel@gmail.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
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Krzysztof Helt authored
The THERMAL_MAX_TRIPS value is set to 10. It is too few for the Compaq AP550 machine which has 12 trip points. Signed-off-by:
Krzysztof Helt <krzysztof.h1@wp.pl> Cc: Len Brown <lenb@kernel.org> Cc: Zhang Rui <rui.zhang@intel.com> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Signed-off-by:
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Chuck Ebbert authored
List could have become empty after the unlocked check that was made earlier, so check again inside the lock. Should fix https://bugzilla.redhat.com/show_bug.cgi?id=427765Signed-off-by:
Chuck Ebbert <cebbert@redhat.com> Cc: <stable@kernel.org> Cc: Len Brown <lenb@kernel.org> Signed-off-by:
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Ben Dooks authored
The SPI core now expects num_chipselect to be set correctly as due to added checks on the chip being selected before an transfer is allowed. This patch adds a num_cs field to the platform data which needs to be set correctly before adding the SPI platform device. Signed-off-by:
Ben Dooks <ben-linux@fluff.org> Signed-off-by:
David Brownell <dbrownell@users.sourceforge.net> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by:
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Ben Dooks authored
Pass the bus number we expect the S3C24XX SPI driver to attach to via the platform data. Signed-off-by:
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